creative brake system.

[IOPort51]

The proportioning valve and the master cylinder are on different sides of the body mount. there will be movement, lots of it, and you will not see it. stress fractures are not your friend. this spreads the flex to about 15 inches of tube rather than just one tight bend. Are you thinking of rear disks as well?

I've been watching this thread closely as I have disc/drum brakes in my Willys and no power at the moment. I just ordered an 8" power brake w/MC and the bracket to firewall setup. I have a question that I haven't seen addressed yet. Why do you "loop" the brake lines before they go to the proportioning valve? I see most vehicles do it but don't know why. Currently my manual brake setup doesn't do this.
My current setup is:
49 Willys CJ3a
Buick 231 V6
89 Mustang clutch pedal assy
79 CJ5 MC (changing to 8" 74-86 CJ booster/MC assy)

 

[stich]

That makes sense. I'm not doing rear discs. It's all out of a 79 CJ5 . Stock axles, TC and tranny. Just doesn't stop well without power brakes. Got the unit in today via brown truck (love that truck) and getting all the rest of the stuff together to install it. I like the idea of supporting the MC. That whole unit is rather heavy.

 

[IOPort51]

OK so I will give it a try.
these are the brakes.

72-75 Jeep Dana 44

You will notice these are for a Dana 44 but they do an AMC20 as well.

they may look a bit pricy at first but if you consider the price of the calipers new is and it is really not a bad deal. The instructions only required that I do it over 3 or 4 times, I was not drinking, before it was right. the quality of the fabricated parts was very good smooth well designed parts with a very tough powder coat paint job. I could have made my own too but the time was and is worth more to me that the small amount I would save.

next the brake adapter .
I got this part from a friend, and I thank him. I think it was from an 80s CJ but ican;t swear to it.

The booster is from Morris 4x4. It is a "universal" 8" dual diaphragm Booster part #mbm-pb8531. It did not fit the adapter and the shaft was too long so an adapter for the adapter was needed. added 1 1/4" to over all length. I used a 1/2" female thread end bearing to connect to the booster shaft and the 1/2" pin in the adapter fit the center of the bearing perfectly. The shaft from the adapter had to be lengthened 1/4" to raise the pedle to the same height as the clutch. the extra paddle was needed as well.

Last and not least the master cylinder.

I used a 1970 Corvette Manual brake master. The important thing here is that it has a 1" cylinder. the other option was a 1977 Corvette power brake MC which has a 1 1/8" cylinder. The smaller cylinder gives the highest pressure at the rotor but uses more peddle. The 1" MC is working well and very definitely improved stopping with out being grabby. The manual cylinder required an insert to go into the end of the cylinder. The power cylinder had a dimple and the manual has a rather deep and slightly tapered hole in the end. I would imagine you could find a 1" mc with a dimple in the end, for enough money but I kind of wanted something I could get anywhere. as long as I don't loose the spacer everything is good. The Corvette is, of course 4 wheel disk brakes so no pesky residual valves to worry about. And it bolts right up to the booster.

any questions??

thats all the

How about a quick summary of what you ended up with. What parts you used ect.

 

[73CJ]

I used 78 Monte Carlo calipers (no PB).they were $15.99 at Oreillys.

$10 worth of 1/4" plate for thebrackets.

I think I used TJ rotors. Less than $100 for both.

I also used a Vette master cylinder but from a 78.

Brake kits are way over priced. . .

 

[IOPort51]

The calipers for a 89 Cadillac Eldorado with e-brakes, new, is right at $300 each at Oreily s. I decided this would not be a junk yard parts project and I would go with new parts, not used or rebuilt. The rotors are a bit of a problem but I think I will not have a reason to replace these. A day to cut, grind and drill/tap is worth a bit to me. I am proud to know people that can roll your own on something like this and I think I could have and gave it some considerable thought. I think for what I bought, I got good value for My hard earned toy money. And as much as anything I was running out of time before the 2nd annual Jeep CJ Colorado trail ride.and I wanted that axle and Ox locker for the trip and the disks were part of the package.

I recommend the Power brakes, they rock!

 

[IOPort51]

these are not good pics but this is the brace I contrived to support the MC. I think it works quite well. It allows no movement, now lets see how it deals with the pounding of a trail ride.